Kernel 2.6.32-28 not booting with iommu and pci-passthrough

[maxprox]

Hello,
today after an updae to Proxmox 3.2 with kernel 2.6.32-28 my setup with "intel_iommu=on" and "pci-passthrough" is no longer running. The error messages is:

Mar  4 10:12:15 XXXXX kernel: DMAR:[DMA Read] Request device [02:00.0] fault addr 0  Mar  4 10:12:15 XXXXX kernel: DMAR:[fault reason 06] PTE Read access is not set

I have found a few bug reports with some Kernel Versions. The last kernel 2.6.32-27 is running very well.
My workaround also was to go back to this 2.6.32-27 Kernel ...
(although the new testing Kernel 3.10.0-1 is booting, pci-passthrough does not work, with error message: "iommu failed" have also a look at: http://forum.proxmox.com/threads/17495-Issues-with-iommu-with-3-10-kernel-in-pvetest-repo)
It is a killer criterion for a produktion system, but i belive pci-passthrough is also for the Versions with Subscription not supportet (?)

regards, maxprox

 

[maxprox]

Hello,
today after an updae to Proxmox 3.2 with kernel 2.6.32-28 my setup with "intel_iommu=on" and "pci-passthrough" is no longer running. ..... regards, maxprox

And the same with Kernel 2.6.32-29 => no pci-passthrough

and again: after downgrade to Kernel 2.6.32-27 pci-passthrough works fine.

regards, maxprox

 

[timo18146]

With an Intel Haswell chipset this also works for me: downgrading from 2.6.32-29 to 2.6.32-27

BUT

as I can see -27 does not support Haswell HDMI Audio interface, which is shown up as error while booting but doesnt influence the rest. In -29 I can't say because Terminal is flooded with error messages.

Regards, Timo

And the same with Kernel 2.6.32-29 => no pci-passthrough

and again: after downgrade to Kernel 2.6.32-27 pci-passthrough works fine.

regards, maxprox

 

[mijanek]

I have the same issue with my Core I7 3770 on H77 chiset. 2.6.32.30 is not working, last working version was 2.6.32.27. Anyway it is affecting only the Intel graphic card and the messages will be stopped after few minutes. My PCI_PASSTROUGH of my DD Cine 6.5 is still working fine. Did anyone have tested the lastest Kernel 3.10.0-3-pve allready regarding IOMMU?

 

[trendco]

I have the same Problem since i upgraded from 2.6.32-27 to 2.6.32-28.
I worked the last weeks further with 2.6.32-27, today i upgraded to 2.6.32-31, but the same Problem persists!
What's going on there?

Aug 22 16:44:46 proxmox kernel: dmar: DRHD: handling fault status reg 3
Aug 22 16:44:46 proxmox kernel: dmar: DMAR:[DMA Read] Request device [00:02.0] fault addr 36c00000
Aug 22 16:44:46 proxmox kernel: DMAR:[fault reason 06] PTE Read access is not set

lspci

00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)

 

[mijanek]

I have the same Problem since i upgraded from 2.6.32-27 to 2.6.32-28.
I worked the last weeks further with 2.6.32-27, today i upgraded to 2.6.32-31, but the same Problem persists!
What's going on there?



lspci

Thats messy implementation of Intel device and memmory reservation claimed in the bios. Unfortunatelly there will be no fix for that, so either you stay on 2.6.32-27 or you take the latest 3.10 kernel from pve-test and switch to virtio (this is working fine for me but without openVZ yet).

 

[trendco]

Does it work again with Kernel 3.10?

 

[mijanek]

Does it work again with Kernel 3.10?

Yes, but not like until now, you have to completely upgrade your environment to pve-test and follow these instructions: pve.proxmox.com/wiki/Pci_passthrough

 

[trendco]

Ok, thanks for the Info.
When is the official launch of the 3'er Kernel in Proxmox?

 

[maxprox]

Hello,

I think here you can find a solution (for me it works):

http://forum.proxmox.com/threads/17495-Issues-with-iommu-with-3-10-kernel-in-pvetest-repo

have a look,

maxprox

 

[fireon]

It works fine with kernel 3.10.0-7-pve. But not with actually 2.6.32-37. I have passthrough an TVcard on PCIEXPRESS for VDR!